diff --git a/blocks/post-content-container/build/render.php b/blocks/post-content-container/build/render.php
index 82583a2..d5017e2 100644
--- a/blocks/post-content-container/build/render.php
+++ b/blocks/post-content-container/build/render.php
@@ -23,7 +23,7 @@ if ($relatedPost) {
 ?>
 
 
-<section id="<?php echo $anchor  ?>" class="post-content-container <?php echo $anchor ? "has-custom-anchor" : "" ?>">
+<section id="<?php echo $anchor  ?>" class="post-content-container <?php echo $anchor ? "has-custom-anchor" : "" ?>" data-related-id="<?php echo $relatedPostId ?>">
 	<h2 class="post-content-container__title"><?php echo $relatedPost->post_title ?></h2>
 	<?php echo $content; ?>
 </section>
\ No newline at end of file
diff --git a/blocks/post-content-container/src/render.php b/blocks/post-content-container/src/render.php
index 82583a2..d5017e2 100644
--- a/blocks/post-content-container/src/render.php
+++ b/blocks/post-content-container/src/render.php
@@ -23,7 +23,7 @@ if ($relatedPost) {
 ?>
 
 
-<section id="<?php echo $anchor  ?>" class="post-content-container <?php echo $anchor ? "has-custom-anchor" : "" ?>">
+<section id="<?php echo $anchor  ?>" class="post-content-container <?php echo $anchor ? "has-custom-anchor" : "" ?>" data-related-id="<?php echo $relatedPostId ?>">
 	<h2 class="post-content-container__title"><?php echo $relatedPost->post_title ?></h2>
 	<?php echo $content; ?>
 </section>
\ No newline at end of file